Photopyroelectric investigation of binary mixtures of liquid crystals in contact preparations |
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| Authors: | S Delenclos A Hadj Sahraoui C Kolinsky JM Buisine |
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| Institution: | (1) Laboratoire de Thermophysique de la Matière Condensée, Equipe de l’UPRES-A CNRS 8024 Dynamique et Structure des Matériaux Moléculaires, Université du Littoral, 145, avenue Maurice Schumann, 59140 Dunkerque, France, FR |
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| Abstract: | The photopyroelectric (PPE) method is proposed as a sensitive technique to study a binary mixture of liquid crystals in a
contact preparation. The photothermal signal is generated while scanning the contact preparation. The crystal (K)/smectic-A
(S
A), smectic-A/nematic (N), and nematic/isotropic (I) interphase boundaries are detected. The displacement of these boundaries
due to the variation of the temperature is monitored.
Received: 13 Oktober 1998 / Accepted: 7 July 1999 / Published online: 3 December 1999 |
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| Keywords: | PACS: 78 20Nv 64 70Md |
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